[llvm-bugs] [Bug 43445] Merge constant literals

via llvm-bugs llvm-bugs at lists.llvm.org
Thu Sep 26 18:26:05 PDT 2019


Richard Smith <richard-llvm at metafoo.co.uk> changed:

           What    |Removed                     |Added
         Resolution|---                         |INVALID
             Status|NEW                         |RESOLVED

--- Comment #5 from Richard Smith <richard-llvm at metafoo.co.uk> ---
There might be a legitimate feature request for lld here, but as a Clang bug,
this is invalid: the proposed optimization is incorrect at the language
semantics level. Distinct global constants are required to be non-overlapping
(see C++ [intro.object]p9: "Two [distinct complete] objects [...] have distinct
addresses and occupy disjoint bytes of storage.")

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